JP2005138887A - Packaging panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging material which is used repeatedly and stacked compactly when it does not store an article to be packed in a collecting time or the like, and with which an article having an projected rotary part is transported and stored safely. <P>SOLUTION: In a packaging panel 1, a hollow part 2a, 2A to store an article to be packed having the projected rotary part are formed on a plate 1a and the packaging panel 1 is formed of a polyolefinic resin foam having an apparent density of 0.04 to 0.45 g/cm<SP>3</SP>and recessed parts 2a, 2A formed on the plate 1a of the packaging panel 1 have a shape so that they are not in contact with the projected rotary part of the article to be packed, for example a rotator connected to a rotary shaft. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a packaging panel used for transporting or storing an article having a protruding rotating part such as an automobile compressor.

  For example, an automobile compressor manufactured by a compressor manufacturer is a weight precision part having a protruding rotating part, and is packed and transported by a packaging material. In general, packaging materials after use at the transportation destination, such as polystyrene foam, cardboard, etc., are incinerated or recycled, and the packaging materials are generally used only once.

Here, packing the compressors for automobiles one by one is a cumbersome operation, and the occupied area for each unit is increased, which increases the transportation cost and the storage cost.
In addition, it is not preferable to incinerate or recycle packaging materials for one-time use, not only from the viewpoint of economy, but also from the viewpoint of resource saving and environmental conservation, and packaging materials that can be used repeatedly multiple times. Was requested.

  On the other hand, Patent Document 1 discloses a pallet load supporting material 1 provided with a storage recess 2 capable of storing a packaged object on its upper surface, and the supporting material 1 is being transported when stacked in multiple stages. In order to prevent slipping off, it is disclosed that the fitting overhanging portion 3 is provided on the peripheral edge, or the convex portion 4 is provided on the lower surface, and the concave portion 5 is provided on the upper surface so as to correspond thereto (Patent Document 1). 1 and 3).

  Further, in Patent Document 2, the cathode ray tube 5 is supported in a state of being sandwiched between storage panels 6 and 6 each provided with an accommodation recess 21 on the upper surface and the lower surface, and a plurality of cathode ray tubes 5 are transported in a stacked state. A foam pallet for collective packaging that can be stored is disclosed (FIG. 12, FIG. 13, etc. of Patent Document 2).

JP-A-8-276935 JP-A-10-230937

  However, first, the technique of Patent Document 1 has a structure in which a recess 2 that can accommodate a packaged object is provided, and thus an excessive force does not directly act on the packaged object. Although the package can be safely transported or stored, the bulk does not change between when the package is stored and when it is not stored. When trying to collect the object support material, there has been a problem that the cost for the collection requires as much as the case of storing and transporting the packaging object.

  In addition, the technology of Patent Document 2 relates to a foam pallet for collective packaging that is supposed to be used only once in the first place, and aims to provide a product that can be easily recycled at the transportation destination. In-mold bead foam synthetic resin moldings using styrenic resin are listed as suitable materials to be formed, but pallets made of such materials are suitable for repeated use from the viewpoint of strength and durability. There was a problem that it was not.

  The present invention has been made in view of the problems of the background art described above, and its purpose is to sufficiently withstand repeated use and to be compactly stacked at the time of collection or the like when the packaged goods are not stored. Another object is to provide a packaging material that can safely transport or store an article having a protruding rotating part.

In order to solve the above-described problem, the packaging panel according to the present invention of claim 1 is a packaging panel in which a concave portion for accommodating a packaged article having a protruding rotating portion is formed on a plate surface, The packaging panel is formed of a polyolefin resin foam having an apparent density of 0.04 to 0.45 g / cm ³ , and the concave portion formed on the plate surface of the packaging panel When the rotating body is connected to the protruding rotating portion, for example, the rotating shaft or the rotating shaft, the rotating shaft and the rotating body are formed so as not to contact each other.

  A packaging panel according to a second aspect of the present invention is the packaging panel according to the first aspect of the present invention, wherein the packaging objects are stored in the recesses and stacked in multiple stages in a state where the packaging objects are sandwiched from above and below. It is used.

  Further, the packaging panel according to the present invention of claim 3 is characterized in that, in the present invention of claim 1 or 2, the concave portion for accommodating the article to be packaged is formed on both side plate surfaces.

  According to a fourth aspect of the present invention, there is provided a packaging panel according to the first or second aspect of the present invention, wherein the concave portion for accommodating the article to be packaged is formed only on one side plate surface. .

  Further, the packaging panel according to the present invention of claim 5 is the panel according to the present invention of claim 1 or 2, wherein the recessed portion for accommodating the article to be packaged is formed on both side plates, and the article to be packaged. The recessed portion to be stored has a panel formed only on one side plate surface, and the plate thickness of the latter panel is formed to be thicker than the plate thickness of the former panel.

  Moreover, the packaging panel which concerns on this invention of Claim 6 WHEREIN: In this invention in any one of the said Claims 1-5, the recessed part which accommodates the said to-be packaged object is a plate surface, for example in matrix form or zigzag form A plurality is formed.

  Further, the packaging panels according to the present invention of claim 7 are engaged with each other when only the panel is further stacked on the plate surface of the packaging panel according to any one of the above-described claims. The engaging concave part and / or convex part to be formed are formed.

  Further, the packaging panel according to the present invention of claim 8 is characterized in that, in the present invention of any one of the above claims 1 to 7, the packaged article having the protruding rotating portion is an automotive compressor. To do.

According to the packaging panel according to the first aspect of the present invention, the panel is formed of a polyolefin resin foam having an apparent density of 0.04 to 0.45 g / cm ³ . In the packaging state of the packaged article using the panel and the state at the time of collection in which only the panel is stacked in multiple stages, the bulkiness is high. The packaging material is greatly different and can reduce the recovery cost for repeated use.
Further, according to the packaging panel of the present invention of claim 1, since the recess for storing the packaged object is formed in a shape that does not contact the rotating part of the packaged object, the packaged object is stored in the recess. Even in the packaging state of the packaging objects stacked in multiple stages while being sandwiched from above and below, the packaging object can be supported in a state where no force is applied to the rotating portion of the packaging object, for example, the rotation shaft. Alternatively, when a rotating body is connected to the rotating shaft, the package can be supported in a state where no force is applied to the rotating shaft and the rotating body, so that the rotating rotation is weak against external pressure. It becomes a packaging material that can safely transport or store an article having a part.

  Further, according to the packaging panel according to the present invention of claim 2 described above, in addition to the effect of the present invention of claim 1 described above, the packaged article is housed in the concave portion and the packaged article is viewed from above and below. Since it is used by being stacked in multiple stages in a state of being sandwiched, the amount of the packaging material is small and a packaging material capable of transporting a plurality of articles to be packaged at a time is obtained.

  Further, according to the packaging panel according to the present invention of claim 3 described above, in addition to the effect of the present invention of claim 1 or 2 described above, a recess for accommodating the packaged object is formed on both side plate surfaces. Therefore, when the panel is stacked and used in multiple stages in a state where the package is stored in the recess and the package is sandwiched from above and below, and when only the panel is stacked in multiple stages at the time of collection, It becomes a packaging material which can be used suitably as a panel arrange | positioned in a middle stage.

  Moreover, according to the packaging panel which concerns on this invention of above-mentioned Claim 4, in addition to the effect of this invention of above-mentioned Claim 1 or 2, the recessed part which accommodates the said to-be packaged object was formed only in the single-side plate surface. When the panel is stacked and used in multiple stages in a state where the package is stored in the concave portion and the package is sandwiched from above and below, and only the panel is stacked in multiple stages during recovery, etc. It becomes a packaging material that can be suitably used as a panel arranged at the top and / or bottom.

  Further, according to the packaging panel according to the present invention of claim 5, in addition to the effect of the present invention of claim 1 or 2, a panel in which concave portions for housing the packaged objects are formed on both side plate surfaces. And a panel in which the concave portion for storing the packaged object is formed only on one side plate surface, and the thickness of the latter panel is made thicker than the plate thickness of the former panel. When the panel is stacked and used in multiple stages with the package being sandwiched from above and below, and when only the panel is stacked in multiple stages at the time of recovery, etc. By arranging the panel in which the concave portion for storing the object is formed in the middle stage, and arranging the panel in which the concave portion for storing the packaged article on only one side plate surface is arranged in the uppermost stage and / or the lowermost stage, the appearance is improved. A good laminate is obtained and the laminate is made of gold. In case of fastening with manufacturing tape also, since the uppermost and / or panels arranged at the bottom are those thickness is thick, and that warpage or cracks hardly occurs.

  Moreover, according to the packaging panel which concerns on this invention of the above-mentioned Claim 6, in addition to the effect of this invention of the above-mentioned Claims 1-5, the recessed part which accommodates the said to-be-packaged item in the board surface of a panel, for example, Since a plurality of objects are formed in a matrix or a zigzag pattern, a plurality of articles to be packaged can be sandwiched between panels, thereby providing a packaging material that can further improve packaging efficiency and transport efficiency.

  In addition, according to the packaging panel according to the seventh aspect of the present invention, in addition to the effects of the present invention according to the first to sixth aspects, only the panel is further stacked in multiple stages on the plate surface of the packaging panel. Since the engaging recesses and / or protrusions that are engaged with each other at the time are formed, there is no slippage when stacked in multiple stages at the time of recovery or the like, and the packaging material has good recovery workability.

  Moreover, according to the packaging panel which concerns on this invention of said 8th, in addition to the effect of this invention of said 1-7, in the shape which the rotation part of the compressor for motor vehicles which is a package does not contact. Since the recess for storing the packaged object is formed, the rotating part is not deformed by vibration or impact during transportation, and the packaging material can be transported in a favorable state.

  Hereinafter, embodiments of the packaging panel according to the present invention will be described in detail.

The packaging panel according to the present invention is formed of a polyolefin resin foam.
Examples of polyolefin resins include branched low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, linear ultra-low density polyethylene, ethylene-butene block copolymer, ethylene-butene random copolymer. Polymers, ethylene-vinyl acetate copolymers, ethylene-methyl methacrylate copolymers, ethylene-ionomer resins obtained by crosslinking between molecules of ethylene-methacrylic acid copolymers with metal ions, propylene homopolymers, propylene-ethylene copolymers Polymer, propylene-butene copolymer, polybutene, polypentene, propylene-ethylene-butene terpolymer, propylene-acrylic acid copolymer, propylene-maleic anhydride copolymer, and the like. Examples include resins in which two or more types of resins are mixed. That. Further, a graft-modified polyolefin resin obtained by impregnating the polyolefin resin with a vinyl monomer such as styrene and graft polymerization can also be used.

Among the resins mentioned above, from the viewpoint of excellent compressive strength and heat resistance, it is preferable to use a polypropylene resin, and in particular, a propylene copolymer having a comonomer component of 2 to 7% by weight has toughness, heat resistance and flexibility. It is preferable because of its excellent properties.
However, the present invention is not limited to the above-described polyolefin-based resin, and a polyolefin-based resin other than the above-described resin, a polystyrene-based resin, or the like can be included as long as it is 30% by weight or less of the polyolefin-based resin.
The polyolefin-based resin may be a crosslinking resin formed by crosslinking with a crosslinking agent such as a peroxide or radiation such as ultraviolet rays, but the production process is simple when compared with a crosslinked resin and a non-crosslinked resin. And non-crosslinked resin is preferable to crosslinked resin in that it can be recycled.

The packaging panel according to the present invention can contain various additives together with the polyolefin resin.
Examples of the additive include a crystal nucleating agent, an ultraviolet absorber, an antioxidant, an antistatic agent, a colorant, a bubble adjusting agent, a shrinkage preventing agent, and a conductivity imparting agent.

Moreover, the packaging panel according to the present invention is a foam-molded article using the polyolefin resin.
Examples of the foam molded article include injection foam molded articles, blow foam molded articles, profile extrusion foam molded articles, foamed particle in-mold molded articles, etc. Among them, higher magnification and complex shapes are mentioned above. From the viewpoint of obtaining a foamed molded product that can be easily molded and has excellent buffering properties, a foamed particle in-mold molded product is preferred.
The foamed-particle-in-mold molded body is, for example, a polyolefin resin foamed particle that is subjected to pressure aging as needed to give a predetermined internal pressure within the foamed particle, and then the foamed particle is opened or closed in a pressurized state. By filling in a mold for molding that cannot be sealed, injecting water vapor at a temperature near the melting point of the base resin constituting the foamed particles, heating the foamed particles, and fusing the foamed particles together Can be manufactured.

The apparent density of the packaging panel according to the present invention comprising the foamed molded body as described above is 0.04 to 0.45 g / cm ³ .
This is because in the case of a foamed molded article having an apparent density of less than 0.04 g / cm ³ , there is a possibility that mechanical strength such as compressive strength required as a packaging panel cannot be obtained. On the contrary, in the case of a foamed molded product exceeding 0.45 g / cm ³ , it is too heavy and difficult to handle.
In view of the above, the apparent density of the packaging panel according to the present invention, more preferably 0.06~0.30g / cm ^3, particularly preferably 0.09~0.25g / cm ³ .
For the apparent density, a value calculated from the weight of the panel and its volume is adopted.

The thickness of the packaging panel according to the present invention is appropriately selected depending on the size and weight of the article to be packaged, but is usually preferably 10 to 150 mm.
This is because if the thickness is less than 10 mm, there is a risk of deformation due to the load of the article to be packaged, and conversely, if the thickness exceeds 150 mm, the handling is poor when moving by grabbing with a hand. is there.
From the above viewpoint, the thickness of the packaging panel according to the present invention is more preferably 30 to 100 mm, and particularly preferably 40 to 80 mm.

  Further, the shape and size of the packaging panel according to the present invention are not particularly limited, but from the viewpoint of ease of handling, ease of transportation by forklift, and the size of the container used for transportation, etc. A rectangular shape having one side of 600 to 2000 mm is preferable, and a rectangular shape of about 1000 to 1200 × 900 to 1000 is particularly preferable from the viewpoint of transport efficiency.

The plate | board surface of the packaging panel which concerns on this invention is formed with the recessed part which accommodates a to-be-packaged object.
The shape of the storage recess is such that the packaged object is not displaced during transportation and the projecting rotating part of the packaged object, for example, the packaged object is an automotive compressor, the side of the automotive compressor When the rotating body is connected to the rotating shaft, the rotating shaft is formed so as not to contact the rotating shaft. Examples of the rotating body include a pulley having a plurality of fins such as pulleys and cooling fins.
It is difficult for a packaged article having a protruding rotating part to be stored so that the axial direction of the packaged object is parallel to the plate surface of the panel due to vibration during transportation or the like. It is preferable from the viewpoint.
Further, the number of the storage recesses is appropriately selected depending on the size of the article to be packaged and the size of the panel itself. Usually, about 5 to 30 is appropriate. It is formed on the plate surface of the packaging panel according to the present invention in a staggered manner.

It is preferable that the depth of the storage recess formed on the plate surface of the packaging panel according to the present invention is a depth capable of storing 10 to 45% of the height of the packaged product in the packaged state.
This is because if the depth of the storage recess is less than 10% of the height of the packaged product in the packaged state, the packaged product cannot be sufficiently supported in the recess, and the packaged product is caused by vibration during transportation. In contrast, when the depth of the concave portion that can accommodate a portion exceeding 45% of the height of the packaged item in the packaged state is set, the packaged item is stored in the concave portion. The packaged state of the packaged product in which the packaging panels are stacked in multiple stages in a state where the packaged product is sandwiched from above and below, and the state at the time of recovery or the like in which only the packaging panel is stacked in multiple stages This is because the difference does not change as much as the difference, and the effect of reducing the recovery cost for repeated use does not occur significantly.
From the above viewpoint, the depth of the storage recess is more preferably a depth that can store 12 to 35% of the height of the packaged item in the packaged state, and a depth that can store 15 to 30%. It is particularly preferred.
In addition, the depth of the said storage recessed part means the maximum depth of the thickness direction of the panel of the recessed part formed in order to store and support a to-be-packaged object, and the rotation part which the to-be-packaged object protruded does not contact. The depth of the so-called stupid hole-like recesses and the depth of the meat-stealing through-recesses formed in this way is not related. In addition, the height in the packaging state of the article to be packaged is, for example, the maximum height in the diameter direction of the cylinder when the article to be packaged has a cylindrical shape and the cylindrical article to be packaged is laid down. Say.

Moreover, it is preferable that the depth of the said storage recessed part formed in the board surface of the packaging panel which concerns on this invention shall be 45% or less of the thickness of a panel.
This is because if a recess with a depth exceeding 45% of the thickness of the panel is formed, the plate thickness of that portion becomes extremely thin and the strength decreases, so that damage or cracking occurs due to vibration or impact during transportation. This is because there is sorrow.
From the above viewpoint, the depth of the storage recess is more preferably 40% or less of the thickness of the panel, and particularly preferably 30% or less of the thickness of the panel.

On the plate surface of the packaging panel according to the present invention, an engagement recess and / or a projection that engage with each other when only the panel is stacked in multiple stages is formed in addition to the recess for storing the article to be packaged. It is preferable.
The shape of the engaging recess and / or projection is not particularly limited, and examples thereof include those having a plan view shape such as a circle, an ellipse, a square, a triangle, and a trapezoid. In addition, even if an engagement recess is formed on one side plate surface and a projection that engages with the engagement recess is formed on the other side plate surface, both an engagement recess and a projection are formed on the one side plate surface. A convex portion and a concave portion that engage with the engaging concave portion and the convex portion, respectively, may be formed on the other side plate surface. In any case, if the engagement recesses and / or projections formed on the panel plate surface can be engaged with each other and prevented from slipping off when only the panels are stacked in multiple stages, the shape thereof can be obtained. The number, size (height or depth), etc. are not limited at all, and depending on the case, it may also serve as a concave portion and a convex portion for accommodating and supporting the package.

In the packaging panel according to the present invention, the whole or at least the panel portion with which the article to be packaged contacts, and further the corner of the panel with which the metal tape for fastening comes into contact with the article to be packaged and the panel. From the viewpoint that “debris” due to friction or “cracking” due to tension of a metal tape or the like is less likely to occur, it can be coated with a higher-strength resin different from the polyolefin-based resin described above.
Examples of the high-strength resin used for coating include, for example, poly (meth) acrylic resins such as polymethyl methacrylate and polyacrylate, polycarbonate resins, polyethylene terephthalate, polyethylene naphthalate, polyester resins such as polybutylene terephthalate, and nylon- Polyamide resins such as nylon 6 and nylon 6,6, polyphenylene ether resins, and polytetrafluoroethylene, polyvinylidene fluoride, vinylidene fluoride-hexafluoropropylene copolymer, and vinylidene fluoride-tetrafluoroethylene copolymer A simple substance such as a fluorine-based resin such as a mixture of two or more.
The thickness of the coating resin is suitably 500 to 1000 μm from the viewpoints of forming workability, economy, and coating effect.

  Further, in the packaging panel according to the present invention, the concave portion for storing the article to be packaged and / or the corner portion of the panel where the metal tape for fastening comes into contact is strengthened with mechanical properties such as compressive strength. From the viewpoint of preventing the local deformation due to the load and transporting and storing the packaged article in a stable state, the structure can be reinforced by increasing the apparent density compared to other parts.

As an example of a specific mode for reinforcing the storage recess and the like, for example, a sheet-like reinforcing material (hereinafter referred to as a reinforcing material) is fitted into the recess or the corner. The reinforcing material in this case is preferably made of a non-foamed polyolefin resin or a polyolefin resin foam in that it is flexible and excellent in mechanical strength.
Examples of the non-foamed polyolefin resin include those similar to the above-described base resin of the foamed particles, which are non-crosslinked from the viewpoint of recyclability and use the same base resin as the panel according to the present invention. It is preferable. When the reinforcing material is made of a polyolefin resin foam, the apparent density is preferably 0.10 g / cm ³ or more from the viewpoint that local deformation due to load can be prevented.
The apparent density of the reinforcing material is a value calculated from its weight and its volume. Moreover, although there is no restriction | limiting in the thickness of the reinforcing material in this case, it is preferable that it is 1-7 mm at the point that it can prevent the local deformation | transformation by a load and it is easy to handle. In the case of foam, there is no limitation, and the thickness is appropriately determined in consideration of the thickness of the panel, the outer shape of the package, and the prevention of local deformation due to the load. Usually, 10 to 100 mm is appropriate.

Moreover, as another example of the concrete aspect which reinforces the said storage recessed part or a corner | angular part, a storage recessed part etc. (henceforth a reinforcement part) is integrally used with a high density foam particle with another part. Molding is mentioned. The foamed particles used for such molding are preferably the same as the base resin constituting the panel in that molding is easy.
Further, in this case, the apparent density of the reinforcing portion is preferably 0.10 g / cm ³ or more in that local deformation due to load can be prevented.
In addition, the apparent density employs a value calculated from the weight and volume of the cut-out portion after cutting out the reinforcing portion. In addition, the thickness of the reinforcing portion formed by integral molding is not limited as long as local deformation due to load can be prevented, but usually, the thickness is set to about half of the total thickness of the panel in consideration of formability.

In the packaging panel which concerns on this invention, the above-mentioned recessed part which accommodates the to-be-packaged article, and the said engagement recessed part and / or convex part shall be formed in the both-sides board surface of a panel.
When such a panel is used by stacking in multiple stages in a state where the packaged article is stored in the recess and sandwiched from above and below, and when only the panel is stacked in multiple stages at the time of collection, etc. When stacking in multiple stages, the recesses and the engaging recesses and / or projections for storing the objects to be packaged formed on both side plate surfaces serve to store and support the objects to be packaged and to prevent the panel from falling off. In addition, it can be suitably used as a panel arranged in the middle stage. For this reason, hereinafter, a panel in which a concave portion or the like for accommodating an article to be packaged is formed on both side plate surfaces in this manner is particularly referred to as “middle panel”.

Moreover, in the packaging panel which concerns on this invention, the above-mentioned recessed part which accommodates the to-be-packaged article, and the said engaging recessed part and / or convex part shall be formed only in the one-side board surface of the panel.
When such a panel is used by stacking in multiple stages in a state where the packaged article is stored in the recess and sandwiched from above and below, and when only the panel is stacked in multiple stages at the time of collection, etc. A collective package having a good appearance by disposing a concave portion for storing an object to be packaged and a flat plate surface side on which an engaging concave portion and / or a convex portion are not formed facing upward, or It can be a laminated body only with panels, and it is stable even on a pallet that does not have a concave portion corresponding to the engaging convex portion by arranging the flat plate surface side downwards at the lowest level. Therefore, when stacking in multiple stages, it can be suitably used as a panel arranged at the uppermost stage and / or the lowermost stage. Therefore, hereinafter, a panel in which a recess or the like for accommodating an article to be packaged is formed only on one side plate surface will be referred to as a “top (lower) stage panel”.

  When packaging an object to be packaged having a protruding rotating part, for example, an automotive compressor, using the packaging panel according to the present invention described above, a pallet is first placed, and a sheet is arranged thereon as necessary. Then, the packaging panel according to the present invention, preferably the above-described middle panel, is placed thereon, and the automotive compressor as the package is placed in the storage recess formed on the upper plate surface of the middle panel. Store the rotating part without contact. And after accommodating the compressor for motor vehicles in all the accommodation recessed parts, the packaging panel which concerns on this invention, the above-mentioned middle stage panel is further set | placed as the 2nd stage above that, The said 2nd stage middle panel The upper part of the automotive compressor previously arranged in a state where the rotating part is not in contact is housed in the housing recess formed on the lower plate surface of the vehicle, and the automotive compressor is sandwiched by the packaging panel according to the present invention from above and below. Support in the state.

Further, in the storage recess formed in the upper plate surface of the second middle panel, the automotive compressor is stored in the same state as above, and further above the packaging panel according to the present invention, preferably The above-described middle panel is repeatedly placed in the third, fourth, and so on, and the packaging recess according to the present invention is formed in the uppermost layer, preferably the upper (lower) panel is formed in the storage recess. And place the upper part of the automotive compressor arranged in a state where the rotating part is not in contact with the storage recess of the uppermost (lower) panel, and place the automotive compressor A multi-packaging package is formed.
Thereafter, the whole is preferably wrapped with a stretch film and fixed together with a pallet with a metal tape.

The collective package of automotive compressors using the above-described packaging panel according to the present invention sandwiches the automotive compressor between the panels without contacting the rotating part, so that it is rotated by vibration or impact during transportation. No force acts on the portion, and the shaft portion (rotating shaft) that supports the rotating portion is not deformed. Furthermore, it is possible to transport and store a plurality of compressors for automobiles at a time with a small amount of packaging material.
In addition, the number of stacked layers of the collective package using the packaging panel according to the present invention is appropriately selected depending on the size of the article to be packaged and further the size of the panel itself. However, it is preferable from the viewpoint of transportation efficiency, packaging efficiency, and safety.

  Further, when collecting the packaging panel according to the present invention, only the packaging panel according to the present invention, preferably the above-described middle panel, is first stacked in multiple stages on a pallet, and both side plates of the middle panel are stacked. Engagement recesses and / or projections formed on the surface are engaged with each other. Then, the packaging panel according to the present invention, preferably the above-described upper (lower) panel, is placed on the uppermost stage so that the plate surface side on which the engaging concave part and / or the convex part are formed faces downward. (Lower) The packaging recess according to the present invention is engaged with the engagement recesses and / or projections formed on the upper plate surface of the middle panel previously stacked with the engagement recesses and / or projections of the step panel. A laminate is formed by stacking only the panels in multiple stages.

  Such a laminate in which only the packaging panels according to the present invention are stacked in multiple stages does not fall off due to the engagement between the engagement recesses and / or projections formed on the plate surface, and the above-described covering Compared to the state of a collective package in which the packaging panels are stacked in multiple stages with the package being sandwiched from above and below, the bulkiness is low, and the collection workability for repeated use is good and the collection is good. Cost can be reduced.

  The pallet used in the present invention may be made of resin, wood, or metal, but a resin pallet that can be used repeatedly and is inexpensive is preferable. In addition, the pallet is a pallet having engaging portions corresponding to the engaging recesses and / or protrusions formed on the plate surface of the packaging panel according to the present invention. The packaging panel according to the invention is preferable because it does not shift.

  Further, examples of the articles to be packaged by the packaging panel according to the present invention include articles having a protruding rotating portion such as a small engine, an electric motor, etc., in addition to the above-described automobile compressor. Further, the packaging panel according to the present invention can be suitably used for automatic packaging by a robot.

  Examples of the packaging panel according to the present invention described above will be described below, but the present invention is not limited to the following examples.

[Packages]
The automobile compressor shown in FIG.
This packaged article M has a substantially cylindrical shape with a diameter φ of about 12 cm and a length L of about 23 cm, and has a pulley K connected to a rotating shaft at one end thereof.

[Middle panel]
Polyolefin resin expanded particles (base resin: propylene-ethylene random copolymer, ethylene component 2.3 wt%, MI: 10 g / min, density: 0.9 g / cm ³ , melting point: 146.5 ° C.) Thus, the panel 1 shown in FIGS. 2 to 6 having an apparent density of 0.1125 g / cm ³ , an outer dimension of approximately 1110 × 950 mm, and a thickness of 45 mm was produced by in-mold foaming.
On the upper plate surface 1a of the panel 1, as shown in FIG. 2, 20 recesses 2a for storing the articles to be packaged M are formed in a matrix, and the maximum depth of the storage recesses 2a is 18 mm (packaged). It is a depth that can accommodate 15% of the maximum height in the packaged state of the object M, and a depth corresponding to 40% of the panel thickness.). In addition, the upper plate surface 1a of the panel 1 is formed with 20 engagement recesses 3a that are engaged when only the panel 1 is stacked, in size, and penetrates or does not penetrate at an appropriate position. An appropriate number of theft holes 4a were formed. When there is a string-like object such as a wiring connected to the packaged object M, the meat stealing hole 4a can also store the string-like object.
Further, as shown in FIG. 4, the lower plate surface 1b of the panel 1 is provided with recesses 2b for storing the articles to be packaged M in portions located behind the storage recesses 2a formed on the upper plate surface 1a. The maximum depth of the storage recess 2b is 15 mm (a depth that can store 12.5% of the maximum height of the packaged product M in the packaged state, and a depth corresponding to 33% of the panel thickness). .) On the lower plate surface 1b of the panel 1, 20 engagement projections 3b having a height of 15 mm are formed in a position opposite to the engagement recesses 3a formed on the upper plate surface 1a. An appropriate number of penetration holes or non-penetration meat stealing holes 4b were formed at various positions.
The recesses 2a and 2b for accommodating the article to be packaged M are parts thereof (reference numeral 2A in FIG. 2) so that the shaft and the pulley K part of the rotating shaft of the automobile compressor that is the article to be packaged M do not contact each other. And a portion denoted by reference numeral 2B in FIG. 4 are formed one step deeper.

[Top (lower) panel]
Polyolefin resin expanded particles (base resin: propylene-ethylene random copolymer, ethylene component 2.3 wt%, MI: 10 g / min, density: 0.9 g / cm ³ , melting point: 146.5 ° C.) Thus, the panel 10 shown in FIGS. 7 to 11 having an apparent density of 0.1125 g / cm ³ , an outer dimension of approximately 1110 × 950 mm, and a thickness of 55 mm was manufactured by in-mold foaming. The upper plate surface 10a of the panel 10 was a flat plate surface as shown in FIG. 7, and chamfered portions 11 each having a width of 15 cm were formed at two locations on four sides.
Further, as shown in FIG. 9, the lower plate surface 10b of the panel 10 has a matrix of 20 recesses 12b for accommodating the articles M having a maximum depth of 15 mm, as with the lower plate surface 1b of the panel 1. In addition, 20 engagement projections 13b having a height of 15 mm were combined to form 20 pieces.
In addition, the recess 12b for storing the article to be packaged M is also formed deeper so that the pulley K portion of the automotive compressor that is the article to be packaged M does not come into contact (the part labeled 12B in FIG. 9). Has been.

[Assembly package]
As shown in FIG. 12, on the resin pallet P (dimensions: height 130 mm × 970 mm × 1130 mm) having a recess that engages with the engagement projection 3 b of the middle panel 1, first, dust should not enter. A sheet (not shown) is laid on the sheet, the middle panel 1 is placed on the sheet, and the vehicle compressor M is housed in the housing recess 2a of the middle panel 1 so that the pulleys K are not in contact with each other. Further, the middle panel 1 is further placed above, and the upper part of the automobile compressor M is housed in the housing recess 2b of the middle panel 1 so that the pulley K is not in contact therewith. As shown in FIG. 13, the uppermost (lower) panel 10 is arranged above the fifth-stage automobile compressor M by repeating the support in a state of being sandwiched between the middle panels 1 and 1. Is placed so that the plate surface 10b on which the storage recess 12b is formed faces downward, and the upper part of the automobile compressor M is stored in the storage recess 12b of the uppermost (lower) panel 10 so that the pulley K is not in contact therewith. The fifth-stage automotive compressor M was supported in a state of being sandwiched by the middle panel 1 and the uppermost (lower) panel 10 from the vertical direction. Then, the entire package is wrapped with stretch film F, fixed together with pallet P with metal tape T, and as shown in FIG. A.
The bulk of the collective package A was 980 mm.
Further, as shown in FIG. 13, the collective package A has the automobile compressor M sandwiched between the upper and lower panels without coming into contact with the pulley K. Therefore, the pulley K is caused by vibration and impact during transportation. Thus, the automobile compressor M could be transported well.

[Laminated body of panel only]
As shown in FIG. 15, on the resin pallet P, five middle-stage panels 1 used for packaging the article to be packaged M were first stacked, and the uppermost (lower) panel 10 was stacked on the top. .
The laminated body B having only the panel formed in this manner was such that the engagement concave portion 3a and the convex portion 3b (or 13b) formed on the panel were engaged and did not fall off. Moreover, the bulkiness of the laminate B having only this panel was 410 mm.

It is the perspective view which showed an example of the to-be packaged object packaged using the packaging panel which concerns on this invention. It is the top view which showed an example of the panel for packaging which concerns on this invention which can be used conveniently as a panel arrange | positioned in a middle stage. It is the front view which showed an example of the panel for packaging which concerns on this invention which can be used conveniently as a panel arrange | positioned in a middle stage. It is the bottom view which showed an example of the packaging panel which concerns on this invention which can be used conveniently as a panel arrange | positioned in a middle stage. It is the side view which showed an example of the panel for packaging which concerns on this invention which can be used conveniently as a panel arrange | positioned in a middle stage. It is sectional drawing of the part which follows the XX line of FIG. It is the top view which showed an example of the panel for packaging which concerns on this invention which can be used conveniently as a panel arrange | positioned in the uppermost step and / or the lowermost step. It is the front view which showed an example of the panel for packaging which concerns on this invention which can be used conveniently as a panel arrange | positioned in the uppermost stage and / or the lowest stage. It is the bottom view which showed an example of the panel for packaging which concerns on this invention which can be used conveniently as a panel arrange | positioned in the uppermost step and / or the lowest step. It is the side view which showed an example of the panel for packaging which can be used suitably as a panel arrange | positioned in the uppermost stage and / or the lowest stage. It is sectional drawing of the part which follows the YY line | wire of FIG. It is the perspective view which showed an example of the state in the middle of packaging a to-be-packaged object using the packaging panel which concerns on this invention. It is sectional drawing which showed an example of the state in the middle of packaging a to-be-packaged object using the packaging panel which concerns on this invention. It is the perspective view which showed an example of the collective package which packaged the to-be packaged object using the panel for packaging which concerns on this invention. It is the perspective view which showed an example of the laminated body which piled up only the panel for packaging which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Middle panel 2a, 2b Storage recessed part 2A, 2B Storage recessed part of pulley part 3a Engaging recessed part 3b Engaging convex part 4a, 4b Meat stealing hole 10 Uppermost (lower) panel 11 Chamfering part 12b Storage recessed part 12B Storage concave part 13b Engaging convex part P Palette M Packaged item (automotive compressor)
K protruding rotating part (pulley)
F Stretch film T Metal tape A Collective package B Panel-only laminate

Claims (8)

A packaging panel in which a concave portion for housing a packaged article having a protruding rotating portion is formed on a plate surface, the packaging panel having a polyolefin density of 0.04 to 0.45 g / cm ³ While being formed of a resin foam, the concave portion formed on the plate surface of the packaging panel is formed in a shape that does not contact the protruding rotating portion of the packaged object, Panel for packaging.   2. The packaging panel according to claim 1, wherein the packaging object is stacked and used in multiple stages in a state where the packaging object is stored in the concave portion and the packaging object is sandwiched from above and below.   3. The packaging panel according to claim 1, wherein the concave portion for accommodating the article to be packaged is formed on both side plate surfaces. 4.   3. The packaging panel according to claim 1, wherein the concave portion for accommodating the article to be packaged is formed only on one side plate surface. 4.   It has a panel in which the concave portion for accommodating the article to be packaged is formed on both side plate surfaces, and a panel in which the concave portion for accommodating the item to be packaged is formed only on one side plate surface, the plate thickness of the latter panel is The packaging panel according to claim 1, wherein the packaging panel is formed thicker than a plate thickness of the former panel.   The packaging panel according to any one of claims 1 to 5, wherein a plurality of recesses for accommodating the articles to be packaged are formed on the plate surface.   The plate surface of the packaging panel further includes an engaging recess and / or a protrusion that engage with each other when only the panel is stacked. A packaging panel as described in 1.   The packaging panel according to claim 1, wherein the article to be packaged having the protruding rotating portion is an automotive compressor.

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